Latching and unlatching direction signal operating apparatus



March 8, 1966 w. L. BROWN ETAL 3,239,619

LATGHING AND UNLATCHING DIRECTION SIGNAL OPERATING APPARATUS Filed April23, 1963 3 Sheets-Sheet l W/'///'am L. Brown BY Ray E W/nogroc/f/ MV-MHTTORNEYS Fig 5 16 INVENTORS.

March 8, 1966 w. BROWN ETAL 3,239,619

LATCHING AND UNLATCHING DIRECTION SIGNAL OPERATING APPARATUS Filed April25, 1963 s Sheets-Sheet 2 5 n w 5 4 INVENTORS.

WIN/0m L. Bro wn Ray W/nqgroc/r/ HTTORNEYS Mamh 1966 w. L. BROWN ETAL3,239,519

LATCHING AND UNLATCHING DIRECTION SIGNAL OPERATING APPARATUS Filed April23, 1963 5 Sheets-Sheet 5 m VENTORS. W/'///'am 4.. Brown BY Ray F3WmogrOc/W United States Patent 3,239,619 LATCHING AND UNLATCHINGDIRECTION SIGNAL OPERATING APPARATUS William L. Brown, Dearborn, and RayF. Winogrocki, East Detroit, Mich., assignors to Boyne Products, Inc.,Boyne City, Mich., a corporation of Michigan Filed Apr. 23, 1963, Ser.No. 275,015 12 Claims. (Cl. 20061.34)

This invention relates to automotive direction signaling apparatus andmore particularly to semiautomatic direction signaling apparatus of thekind that may be adjusted manually from a neutral, inactive position toan operating position on either of two sides of the neutral position,and which is automatically returned to its neutral position uponcompletion of a turn.

Conventional direction signaling apparatus includes a plurality ofelectrically conductive switch members which may be moved into and outof engagement with one another in response to movement of an actuatingmember. The actuating member of conventional constructions includesreturn or canceling means movable with the actuating member into thepath of a cam that revolves upon rotation of a steering wheel. Rotationof the steering wheel in the direction that the vehicle is to be turnedordinarily has no effect upon the position of the actuating member, eventhough the latter may be in such position as to signal a turn. Rotationof the steering wheel in the opposite direction at the conclusion of theturn, however, ordinarily effects engagement between the cam and theprojected canceling part. Such engagement between the projectedcanceling part and the cam enables the latter to exert sufficient forceon the actuating member, through the canceling part, to effectrestoration of the actuating member to its neutral or inactive positionand cancellation of the turn signal.

The actuating member of conventional direction signaling mechanisms mustforcibly, but yieldably, be restrained against movement when it is inits neutral or operating positions to prevent inadvertent adjustment ofthe actuating member from such positions. As a result, the exertion ofsubstantial force may be required between the canceling cam and theprojected canceling part to effect automatic return of the actuatingmember from an operating position to its neutral position.

The necessity of having to effect forcible return of the actuatingmember may have several undesirable consequences. For example, the forcegenerated by a rapidly rotating cam may be of such magnitude as toeffect return movement of the actuating member at a speed to cause it tomove from one operating position through the neutral position and intoits other operating position. Moreover, the repeated application of highforces on the canceling parts of the direction signaling mechanism maycause fatigue and failure of such parts. Furthermore, the parts of thecancellation mechanism must be sufficiently stiff or rigid to withstandthe forces acting upon them, with the result that operation of thesignaling apparatus may be excessively noisy. In addition, the necessityof constructing the parts of the direction signal apparatus withsufficient strength to withstand the imposition of relatively highforces results in higher costs than otherwise would be necessary.

The principal object of this invention is to provide direction signalingapparatus which overcomes all of the aforementioned disadvantages ofconventional direction signals.

Another object of the invention is to provide direction signalingapparatus wherein the actuating member may be maintained in an operatingposition by a simple latchinch mechanism which requires the applicationof rela- 3,239,619 Patented Mar. 8, 1966 tively small force to effectdisengagement of the latching means.

A further object of the invention is to provide direction signalingapparatus wherein the actuating member constantly is biased to itsneutral or inactive position.

7 Another object of the invention is to provide direction signallngapparatus of the character referred to and wherein the biasing means forthe actuator member is operable in response to disengagement of thelatching mechanism to effect restoration of the actuating member to itsneutral position.

A further object of the invention is to provide direction signalingapparatus that is relatively quiet in operation and which may be lessexpensive than conventional signaling devices.

Other objects and advantages of the invention will be pointed outspecifically or will become apparent from the following description Whenit is considered in conjunction with the appended claims and theaccompanying drawings, in which:

FIGURE 1 is a fragmentary view, partly in top plan and partly insection, or direction signaling apparatus constructed in accordance withone embodiment of the invention;

FIGURE 2 is a fragmentary top plan view of the switch casing andsupport, the actuating member being removed;

FIGURE 3 is a bottom plan view of the actuating member;

FIGURE 4 is an end elevational view of the actuator member viewed in thedirection of the arrows 4-4 in FIGURE 3;

FIGURE 5 is a view similar to FIGURE 1, but illustrating the actuatingmember in one of its operating positions;

FIGURE 6 is a sectional view taken on the line 6-6 of FIGURE 2;

FIGURE 7 is a bottom plan view of a modified form of the invention;

FIGURE 8 is a view similar to FIGURE 7, but illus trating the actuatormember in one of its operating positions; and

FIGURE 9 is an end elevational view of the apparatus viewed in thedirection of the arrows 99 in FIGURE 7.

Apparatus constructed in accordance with the invention is adapted foruse in conjunction with a vehicle having a rotatable steering shaft 1that may be enclosed within a tubular steering column (not shown) andhaving fixed to its upper end a steering wheel (not shown). In thedisclosed embodiments, the steering shaft 1 has a band 2 fixed theretowhich is provided with a cam 3 that rotates in an orbital path inresponse to rotation of the shaft 1. It would be possible, however, toprovide one or more cams on the hub of the steering wheel in lieu ofmounting the cam on the shaft 1.

The apparatus disclosed in FIGURES 1-6 comprises a base or supportmember 4 formed of a moldable insulating material such as nylon or thelike, and including a generally segment-shaped flange 5 joined to anannular mounting flange 6 having a number of reinforced openings 7therein for the reception of mounting screws or the like by means ofwhich the support 4 may be secured to a housing (not shown) provided atthe upper end of the steering column. The flange 5 is formed with acentral depression 8 bounded by side walls 9 and end walls 10 defining aswitch housing or casing. Fixed in the casing adjacent one end of thelatter is a pair of spaced apart, electrically conductive contacts 12and 13. Adjacent the opposite end of the casing is fixed a pair ofcompanion contacts 12a and 13a. Between the ends of the casing is agenerally hourglass-shaped opening 14 in which is rockably mounted asubstantially rectangular rock shaft which extends through the casingand is joined beneath the latter to a manually operable handle 16.

Mounted on the support member 4 is molded nylon or the like actuatormember 17 comprising an arcuate body 18 terminating at one end in anintegral, flexible canceling finger or trigger 19 having a first part 20which extends beyond the adjacent end of the body 18 along substantiallythe same are. The finger 19 is bent intermediate its ends as at 21 andterminates in a part 22 that projects toward the cam 3 and is adapted toengage the latter. The terminal end portion of the finger 19 is cut awayas at 23 on its under side so as to reduce the height of the end portionof the finger for a purpose presently to be explained. At the oppositeend of the actuator body 18 is a similar finger 19a, and similar partsare identified by similar reference characters, followed by the sutfixa.

Mounted on the under surface of the actuator 17 so as to be interposedbetween the casing 11 and the actuator is a pair of electricallyconductive switch members 24 and 25, the switch member 24 having a pairof arms 26, 26a adapted to engage the contacts 13, 13a, respectively.The switch member has a pair of arms 27, 27a that are adapted to engagethe contacts 12, 12a, respectively. The switch member 24 constantly isin engagement with an electrically conductive post 28 that is supportedin the actuator member, and the switch member 25 constantly is inengagement With an electrically conductive post 29 that is alsosupported in the actuator member. The under surface of the actuator body18 is provided with a number of abutments 30 and 30a between which thearms of the respective switch members extend so as to be restrainedagainst undue flexing.

The construction and operation of the electrically conductive switchparts of the disclosed apparatus are similar to the construction andoperation of the apparatus disclosed in co-pending application SerialNo. 131,243, now Patent No. 3,171,910, filed August 14, 1961. Theelectrical circuit disclosed in that application also may be utilizedfor the construction thus far described.

The actuator member 17 is adapted to overlie the support member 4 and tobe mounted on the latter for rocking movements relative thereto. Rockingmovements of the actuator are effected by the shaft 15, which extendsthrough a substantially rectangular opening 31 formed in the actuatormember between the ends of its body portion 18. The arrangement is suchthat, when the members.4 and 17 are assembled with one another in themanner indicated in FIGURE 1, movement of the operating handle 16clockwise from the position shown in FIGURE 1 to the position shown inFIGURE 5 will effect rocking movement of the actuator 1'7 relatively tothe support member 4 from the neutral position shown to an operatingposition. In the operating position of the parts, direction signals atone side of the vehicle will be flashed in the same manner described inthe aforementioned application. Movement of the operating handle 16 in acounterclockwise direction from the position shown in FIGURE 1 wallcause rocking of the actuator member 17 in a counterclockwise directionso as to fiash the direction signals at the other side of the vehicle.

When the operating handle 16 has been adjusted to either of itsdirection signal operating positions, it is desirable that the actuatormember 17 remain in its operating position until such time as a turn hasbeen completed. Accordingly, latching means is provided for releasablylatching the actuating member in either its left hand or its right handturn signaling position. The latching means for holding the actuatingmember in one of its turn indicating positions is designated generallyby the reference character 32 and comprises an upstanding latch keeperor abutment 33 provided on the support member 4 adjacent the terminalend portion 22 of the trigger finger 19 when the actuator is in itsneutral position. The latching means 32 also includes a flexible latchfinger 34 forming an integral part of the actuator member 17 and lyingbetween the adjacent end of the body portion 18 and the trigger finger19. The free end of the latch finger 34 terminates in a substantiallycylindrical pin or detent 35.

The height of the latch keeper 33 is such as to permit the latch finger34 and the trigger finger portion 22 to pass over it withoutinterference, and it is for this reason that the portion 22 is cut awayat 23. The pin 35, however, is of such length as to terminate adjacentthe upper surface of the support member 4 so as to be engageable withthe latch keeper 33. The keeper 33 has a substantially planar camsurface 37 which confronts and lies in the path of movement of the latchpin 35 upon rocking movement of the actuator in a clockwise directionfrom the position shown in FIGURE 1. The cam surface 36 terminates in asubstantially planar holding surface 37, the included angle between thesurfaces 36 and 37 being about Associated with the opposite ends of thesupport member 4 and the actuator member 17 is a similar latchingapparatus 32a, similar parts being identified by similar referencecharacters followed by the sufiix a.

Yieldable means is provided for constantly biasing the actuating memberto its neutral position and for returning the actuating member fromeither of its operating positions to its neutral position. The biasingmeans comprises a pair of compression springs 38, 38a located adjacenteach end of the actuating member. The spring 38 is received in asemicircular recess 39 formed in the support flange 5. The actuatormember 17 is provided with a similar recess 40 that overlies the recess39 and also accommodates the spring 38. Similar recesses 39a and 40a areprovided in the members 5 and 17 adjacent the opposite ends of thelatter. The depth of each recess 39, 40 and 39a, 40a corresponds toabout half the diameter of the associated spring, as is best illustratedin FIGURE 6. Upon assembly of the casing and actuator, therefore, thespring 38 will extend into both of the recesses 39, 40 and the spring38a will extend into both of the recesses 39a, 40a.

The springs 38, 38a are of such length as to have their opposite endsbear against the opposite ends of the respective recesses in which theyare received so as to exert a light but constant force on the actuatormember 17 tending to hold the latter in its neutral position. Theactuator member is displaceable upon manipulation of the operatinghandle 16, however, so as to be rocked either clockwise orcounterclockwise about the axis of the shaft 15 from the neutralposition shown in FIGURE 1.

Upon rocking of the actuator from the neutral position to the operatingposition shown in FIGURE 5, the latch pin 35 engages the cam surface 36,which causes the latch finger 34 to move inwardly or toward the adjacentend of the actuator body 18, such movement being permitted by theflexibility of the finger 34. As the movement of the actuator continues,the latch post pin will reach the end of the cam surface 36, whereuponthe resiliency of the finger 34 will cause the post 35 to engage andbear against the cam surface 37. Simultaneously with the movement of theactuator, the springs 38, 380 will be compressed between opposite endsof the recesses in the support and actuator members, and the compressionof the springs will cause the latter to exert a force on the actuatormember tending to return it to its neutral position. The actuator,however, will be prevented from such movement by the engagement betweenthe latch pin 35 and the holding surface 37 of the latch keeper 33.Thus, the actuator member releasably will be held in an operatingposition.

Rocking movement of the actuator member to the operating position shownin FIGURE 5 will cause the terminal end of the latch release finger 22to move from a position clear of the path of the cam 3 into the path ofrotation of the latter, as is indicated in FIGURE 5. In this position ofthe finger 22, rotation of the steering shaft 1 in a clockwise directionwill cause the cam 3 to bear against the adjacent end of the triggerfinger and flex the latter way from latch pin 35, as is permitted by theflexibility of the arm 19, without having any effect on the position ofthe actuator member. Upon counterclockwise rotation of the steeringshaft 1, however, the cam 3 will engage the terminal end of the finger22 and move the latter into engagement with the latch pin 35. Continuedcounterclockwise rotation of the cam 3 will cause the trigger finger 22to bear against the latch pin 35 with sufficient force to flex thefinger 34 inwardly a distance sufficient to disengage the post 35 fromthe holding surface 37. Upon disengagement between the parts 35 and 37,the springs 38, 38a react between the support 4 and the actuator memberto return the latter to its neutral position, where it Will bemaintained yieldably by the springs.

It will be understood that operation of the apparatus upon rocking ofthe actuator member counterclockwise from the position shown in FIGURE 1is the same as has been described, with the exception that the latchingand latch releasing parts at the opposite ends of the support andactuating members are utilized.

In the event the actuating member should be held forcibly in anoperating position, and be prevented from returning to its neutralposition, the flexibility of the trigger finger 19 or 19a will enable itto be displaced substantially radially outwardly of the shaft 1 by thecam 3. Accordingly, there is no likelihood of jamming the steeringapparatus.

Upon return movement of the actuator 17 toward its neutral position fromeither operating position, the springs 38, 38a expand, thereby expendingthe energy stored in them due to their compression. Thus, when theactuator reaches its neutral position, the springs have the leastpossible capacity to cause the actuator to move beyond its neutralposition. Moreover, any tendency of the ac tuator to move beyond itsneutral position would require compression of the biasing springs. Thesefactors combine to assure accurate return of the actuator to its newtral position from either of its operating positions and providepositive restraint against inadvertent movement of the actuator from itsneutral position to either of its operating positions.

The embodiment of the invention disclosed in FIG- URES 7-9 is similar inmany respects to the embodiment just described. In the modifiedembodiment the apparatus includes an arcuate, nylon or similar supportor casing member 40 which may be integrally formed with mounting flanges(not shown) similar to the flanges 5 and 6, and within which are mountedthe fixed contacts 12, 12a and 13, 13a. The support 40 is provided witha central, hourglass-shaped opening 41 through which the rock shaft maypass. Mounted atop the casing 40 is a nylon or similar actuator member42 having a central opening (not shown) which receives the rock shaft 15so as to be rockable relatively to the casing 40 in response to rockingof the shaft 15. The actuator 42 includes an arcuate body portion 43within which .are contained electrically conductive switching elementsidentical in all respects to the elements 24 and and which are adaptedto engage and disengage the fixed contacts supported in the casing.

The embodiment of the invention shown in FIGURES 7-9 includes latchingmeans 44 adjacent one end of the switch casing and comprising anintegral, flexible, resilient latch finger 45 extending from the one endof the casing toward the steering shaft 1. Between its ends, the outersurface of the finger 45 is provided with a latching detent or notch 46of undulating configuration. The latching means 44 also includes a latchpin 47 that is integrally molded on the under surface of the actuator 42adjacent one end of the body portion 43, the pin 47 being so located asto lie adjacent but out of the notch 46 when the actuator is in itsneutral position.

The apparatus includes latching means 44a at the other ends of thecasing and actuator members, and similar parts are identified by similarreference characters, followed by the suffix a.

A latch release or trigger finger or arm 48 is integrally molded at oneend of the actuator member 42 .and comprises a first portion 49 that isjoined to the actuator body portion and forms an extension of the latteralong substantially the same arc. The arm 49 is bent inwardly as at 50to form an intermediate portion 51 terminating in a cam engaging endportion 52. At the opposite end of the actuator member are similarparts.

The casing member 40 is provided with a pair of semicylindrical recesses148, 148a adjacent its opposite ends, and the actuator member isprovided with overlying recesses 149, 149a, similar to the correspondingrecesses in the earlier described embodiment. Received in the recesses148, 149 is a compression spring 150, and a similar spring 150a isreceived in the recesses 148a, 149a, the springs 150 and 150a beingsimilar to the springs 38, 38a and constantly biasing the actuator 42 tothe neutral position indicated in FIGURE 7.

A handle (not shown), similar to the handle 16, is connected to theshaft 15 to rock the latter and the actuator member from a neutralposition to an operating position on either of tWo opposite sides of theneutral position. Thus, rocking of the shaft 15 in a clockwisedirection, as viewed in FIGURE 7, will effect corresponding rocking ofthe actuator to the operating position indicated in FIGURE 8. Uponmovement of the actuating member to its operating position, the latchpin 47 cams the latch finger 45 inwardly or toward the adjacent end ofthe switch casing and enters the notch 46. The resiliency of the finger45 urges the notched portion thereof into latching engagement with thepin 47 to hold the actuator in its operating position. Movement of theactuator to its operating position compresses the springs 150, 150a, butthe reaction between the sides of the notch 46 on the latch pin 47prevents return movement of the actuator member to its neutral position.

As the actuator moves to its operating position, the terminal endportion 52 of the latch release arm 48 moves into the path of rotationof the earn 3. Rotation of the shaft 1 clockwise, as viewed in FIGURE 8,will cause the arm 48 to be moved away from the latch arm 45 withouthaving any effect on the position of the actuating member. Rotation ofthe shaft in the opposite direction, however, will cause the cam 3 toexert a force on the arm 48 to effect movement of the terminal end 52into engagement wit-h the terminal end of the latch finger 45 and movethe latter toward the adjacent end of the switch housing, whereupon thelatch pin 47 is released from the latch notch. Upon release of the latchpin 47, the biasing springs 150, 150a restore the actuating member toits neutral position in exactly the same manner as previously wasdescribed.

In the event the actuator should be held forcibly in its operatingposition, engagement between the cam 3 and the latch release fingerwillcause the latter to be deflected radially outwardly of the shaft 1,as permitted by the flexv bi-lity of the finger. Thus, there is nolikelihood of amming the steering mechanism.

The disclosed embodiments are representative of presently preferredforms of the invention, but are intended to be illustrative rather thandefinitive thereof. The invention is defined in the claims.

We claim:

1. Direction signal operating apparatus comprising a support member; anactuator member; means mounting said actuator member on said supportmember for movements from a neutral position to an operating position oneither of two sides of said neutral position; cooperable latch means oneach of said members engageable with each other in response to movementof said actuator member to either of its operating positions forreleasably maintaining said actuator member in either operatingposition; flexible means carried. by said actuator member operable toengage the latch means on one of said members and release saidcooperable latch means; and means reacting between said support memberand said actuator member and operable in responseto release of saidcooperable latch means to return said actuator member from eitheroperating position to said neutral position.

2. Direction signal operating apparatus comprising a support member; anactuator member; means mounting said actuator member on said supportmember for movements from a neutral position to an operating position oneither of two sides of said neutral position; yieldable means reactingbetween said members and biasing said actuator member to said neutralposition; cooperable latch means on each of said members and engageablewith one another to releasably hold said actuator member in eitheroperating position against the bias of said yieldable means; and.flexible means carried by said actuator member engageable with the latchmeans on one of said members to disengage said cooperable latch meansand enable said yieldable means to return said actuator member to saidneutral position.

3. Direction signal operating apparatus for use with cam means movablein an orbital path, said apparatus comprising a support member; anactuating member; means mounting said actuator member on said supportmember for movements relative thereto from a neutral position to anoperating position; latch means on said support member engageable withsaid actuator member in response to movement of the latter into said.operating position; flexible release means carried by said actuatormember and movable with the latter into the path of said cam means forengagement therewith, said release means being movable into engagementwith said latch means to release the latter from said actuator member inresponse to engagement between said cam means and said release means;and means reacting between said support member and said actuator memberoperable to return the latter to said neutral position in response todisengagement of said latch means.

4. Direction signal operating apparatus for use with cam means movablein an orbital path, said apparatus comprising a support member; firstlatch means supported by said support means; an actuator member; meansmounting said actuator member on said support member for movement from aneutral position to an operating position; second latch means supportedby said actuator member and. engageable with said first latch means uponmovement of said actuator member to said operating position, one of saidlatch means being flexible; and flexible latch release means carried bysaid actuator member and movable into the path of said cam means inresponse to movement of said actuator member to said operating position,said latch release means being engageable with the flexible one of saidlatch means to release said first and, second latch means in response toengagement between said cam means and said latch release means.

5. The apparatus set forth in claim 4 wherein said latch release meansis engageable with said first latch means.

6. The apparatus set forth in claim 4 wherein said latch release meansis engageable with said second latch means.

7. The apparatus set forth in claim 4 including yieldable means reactingbetween said support member and said actuator member and constantlybiasing the latter to said neutral position.

8. Direction signal operating apparatus comprising a support member; anarcuate actuating member having opposite ends; means mounting saidactuating member on said support member for rocking movements about anaxis from a neutral position to an operating position on either side ofsaid neutral position; cooperable latch means on each of said membersoperable to releasably latch said actuating member in either operatingposition; biasing means reacting between said members on opposite sidesof said axis and constantly biasing said actuating member to its neutralposition; and flexible release means carried by said actuating member ateach of its ends for engagement with one of said latch means at theadjacent end to release the associated latch means, whereby said biasingmeans is operable to return said actuating member from an operatingposition to said neutral position.

9. Apparatus as set forth in claim 8 wherein said biasing meanscomprises apair of compression springs accommodated in recesses formed.in each of said members.

10. Apparatus as set forth in claim 8 wherein said latch means comprisesan abutment on said support member having a cam surface and a holdingsurface, and a flexible latch finger on said actuating member having apart engageable with said cam surface for deflection by the latter intoholding relation with said holding surface.

11. Apparatus as set forth in claim 8 wherein said latch means comprisesa flexible finger on said support member having a notch therein, and alatch part carried by said actuating member for movement into saidnotch.

12. Direction signal operating apparatus comprising a support member; anactuating member; means mounting said actuator member on said supportmember for movement from a neutral position to an operating position;yieldable means reacting between said support member and said actuatingmember and constantly biasing the latter to its neutral position; afirst latch part on said support member; a second latch part on saidactuating member movable into latching engagement with said first latchpart in response to movement of said actuator member to said operatingposition and operable releasably to maintain said actuating member insaid operating position; and flexible latch release means on one of saidmembers engageable with the latch part on the other of said members whensaid actuating member is in said operating position to disengage saidfirst and second latch parts, whereby said yieldable means is operableto return said actuating member to said neutral position.

References Cited by the Examiner UNITED STATES PATENTS 2,902,556 9/1959Dryer 20061 2,961,503 11/1960 Schmidt 200-61 3,079,476 2/1963Dyksterhouse 200-61 3,107,551 10/1963 Cline 74-574 3,120,588 2/1964Brown 200-61 BERNARD A. GILHEANY, Primary Examiner. BROUGHTON G. DURHAM,Examiner.

4. DIRECTION SIGNAL OPERATING APPARATUS FOR USE WITH CAM MEANS MOVABLEIN AN ORBITAL PATH, SAID APPARATUS COMPRISING A SUPPORT MEMBER; FIRSTLATCH MEANS SUPPORTED BY SAID SUPPORT MEANS; AN ACTUATOR MEMBER; MEANSMOUNTING SAID ACTUATOR MEMBER ON SAID SUPPORT MEMBER FOR MOVEMENT FROM ANEUTRAL POSITION TO AN OPERTING POSITION; SECOND LATCH MEANS SUPPORTEDBY SAID ACTUATOR MEMBER AND ENGAGEABLE WITH SAID FIRST LATCH MEANS UPONMOVEMENT OF SAID ACTUATOR MEMBER TO SAID OPERATING POSITION, ONE OF SAIDLATCH MEANS BEING FLEXIBLE; AND FLEXIBLE LATCH RELEASE MEANS CARRIED BYSAID ACTUATOR MEMBER AND MOVABLE INTO THE PATH OF SAID CAM MEANS INRESPONSE TO MOVEMENT OF SAID ACTUATOR MEMBER TO SAID OPERATING POSITION,SAID LATCH RELEASE MEANS BEING ENGAGEABLE WITH THE FLEXIBLE ONE OF SAIDLATCH MEANS TO RELEASE SAID FIRST AND SECOND LATCH MEANS IN RESPONSE TOENGAGEMENT BETWEEN SAID CAM MEANS AND SAID LATCH RELEASE MEANS.